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Formation Pore Pressure Prediction and Application Based on Aacoustic Logging
Cejing jishu, 2023 Formation pore pressure prediction is an important factor in the study of wellbore stability. Accurate prediction of pore pressure can avoid safety problems, such as overflow and blowout, thereby improving drilling efficiency, reducing environmental ...
QI Wenli +4 more
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Energy Exploration & Exploitation, 2023 ROP (Rate of Penetration) is a comprehensive indicator of the rock drilling process and how efficiently predicting drilling rates is important to optimize resource allocation, reduce drilling costs and manage drilling hazards.
Wei Liu +4 more
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Improving Thermal Stability of Starch in Formate Fluids for Drilling High Temperature Shales [PDF]
Journal of Petroleum Science and Technology, 2012 Starch is one of the most widely used biopolymers in water based drilling fluids to control fluid loss. The thermal stability of starch in common drilling fluids is low (93 °C).
M. Valizadeh, ali reza nasire
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The Effect of Additive ZRJ-S1 on Mechanical Properties of Portland Cement
Advances in Materials Science and Engineering, 2022 For mechanical performance perfection of cement-based material, toughening materials are often added to the cement system, such as solid particles, carbon-based material, or other inorganic/organic materials.
Xin Zeng +6 more
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Frontiers in Earth Science, 2023 The existence of gravels in the glutenite formations leads to the complex geometries of hydraulic fracturing propagation and difficult construction in fracturing engineering. To study the hydraulic fracturing propagation law of glutenite formations, this
Peng Tan +19 more
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Cutting mechanism of a special 3D concave-shaped PDC cutter applicable to the Weiyuan shale
Journal of Petroleum Exploration and Production Technology, 2023 The Weiyuan shale gas field faces problems of long drilling cycles and high development costs. Improving the drilling efficiency of polycrystalline diamond compact bits in shale formations will significantly reduce the overall well cost and duration ...
Xiaohua Ke +5 more
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Poisson Matrix Completion [PDF]
, 2015 We extend the theory of matrix completion to the case where we make Poisson observations for a subset of entries of a low-rank matrix. We consider the (now) usual matrix recovery formulation through maximum likelihood with proper constraints on the ...
Cao, Yang, Xie, Yao
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MacNeille completion and profinite completion can coincide on finitely generated modal algebras [PDF]
, 2008 Following Bezhanishvili & Vosmaer, we confirm a conjecture of Yde Venema by piecing together results from various authors. Specifically, we show that if $\mathbb{A}$ is a residually finite, finitely generated modal algebra such that $\operatorname{HSP ...
Vosmaer, Jacob
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Completability vs (In)completeness [PDF]
Acta Linguistica Hafniensia, 2020 In everyday conversation, no notion of “complete sentence” is required for syntactic licensing. However, so-called “fragmentary”, “incomplete”, and abandoned utterances are problematic for standard formalisms. When contextualised, such data show that (a) non-sentential utterances are adequate to underpin agent coordination, while (b) all linguistic ...
Gregoromichelaki, Eleni +8 more
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NOVEL ACID SOLUBLE ABRASIVE MATERIAL FOR ABRASIVE JET PERFORATION THROUGH COILED TUBING AND TS-TOOL FOR CARBONATE GAS WELL – YARD TEST [PDF]
Romanian Journal of Petroleum & Gas Technology, 2023 Coiled tubing is used in oil and gas well production with the aim of increasing oil field production. The efficiency of this process is reproduced in this material, with practical applications in carbonate rocks, also presenting the conditions of ...
Alaa Zeinab +3 more
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